Swaging-machine.



A. BERG.

SWAGING MACHINE.

APPLICATION FILED DEO,12, 1908.

Patented Mar. 15,1910.

3 HHEBTS-SHBET 1.

A. BERG.

SWAGING MACHINE. I APPLICATION FILED DEC 12;, 190a.

952,298. Patented Mar. 15, 1910.

3 SHEETS-SHEET 3.

J/ lbmaaocoz UNITED saa'rns Parana? orrioiz. I

ANDREW BERG, OF BRIDGEPORT, CONNECTICUT, ASBIGNOR lG TEE CQULTEB &: MOKENZIE MACHINE COMPANY, OF BRIDGEPORT, CQNNECTICUT, A CORPORATION.

SVJAGING-EACHINE.

Specification of Letters retest. Patented Mar. 15, 1910.

Application filed December 12, 1908 Serial No. 467,177.

My invention relates to swaging machines and it consists in certain details of construction to be more fully described in the following specification and such features believed to be new and novel are particularly pointed out in the claims.

To enable others skilled in the art to understand my invention, reference is bad to the accompanying drawings, in -whicl1 Figure 1 represents a vertical rear elevation of the machine; Fig. 2 is aside elevation; Fig. 3 is a sectional view of the man chine fran' e on line a (1 of Fig. 1; Fig. l is a brokenscction of the machine and the pitinen carrying the swaging dies; Fig. 5 is a broken view of one iof the swaging crank shafts and sectional view, of the pitinan mechanism connected therewith; and Fig.

' (3 is a detail view of three of the swaging cranks, viz., 1 1 and 15 are shown at Figs.

dies and a finished file tang.

,l is the frame of the niachine provided with the housings 2, 3, 4,5, (3, 7, 8 and {t in which is journaled the main drivingshaft- 10 carrying the driving pulleys ll and 12, the horizontal shaft B and the vertical shafts 14 and 15 rotatably connected together through the medium of the bevel gears 16, 17, 18, 19, and 21.

22, 23, 24 and 25 are the swaging dies rcmova'bly secured to the reciprocatin pitmen 26, 21, 28 and 29. The several pitmen are pivotally connected to the arms 30, 31, 22 and 33 having the head portions 30 31",

32 and 2&3, whieh heads are journaled on the eccentrics 3t, 35, 3t and 37, and these eccentrics are journaled oncrankportions of the shafts 10, 13, 1d and 15. Two of these 3 and 5.

38, 35), and 41 are straps adjustably clamped to the before mentioned eccentrics, and 42, 4-3, 44 and 45 are links pivotally supported by one end to said straps and by the other end to the arms 46, 47, 48 and 49,

secured to the horizontal and vertical sec-;

ondary shafts 50, 51, 52 and 53, journaled 1n the boxes 54, 56 and 57 and are rotathe thickness 0 .tably connected together by gears 58,59,

01, $2,633,6 1: and 65. Y

The vertical shaft 66 (Figs. 1 and 2) 1s journaled in the bracket 67, and 68 isa worm gear journaled on said shaft and normally running idle thereon through the medium of the worm 69 secured to the shaft 13.

70 is a plate mounted on the upper end of shaft 66, and 71 is a link eccentrically and pivotally connected by one of its ends to said plate while its opposite end is pivotally connected to the arm 72 secured to the vertical shaft 50. On the lower end of shaft U6 is the clutch sleeve 73 rotatably connected with said shaft and Vertically movable thereon and carrying the clutch pins 7-1 adapted to be brought into engagement with the clutch pins 75 of the clutch collar 76 secured to or forming an integral part, of the worm gear (58 for the purpose to be 'liereina'fter more fully described.

The vork holding chuck 77 is slidably mounted on the horizontal studs 78 and 79 projecting from the frontof the machine frame and it is flexibly held against the frame by means of the springs 80 and 81. The rib rises above the upper surface of the chuck to support the piece to be operated upon by the (lies.

' 83 is an adjustable gage against which the outer end of said piece rests.

8.1- is a stationary jaw located near the dies, and 85 is a movable jaw having the tail-piece S5 and which is actuated to open and close said movable jaw through the medium of the handle lever 86 and link 87. The dies can be shaped to swage work of any form required. Those shown are particularly adapted for swaging file tangs.

the gage 83 and its forward end projecting into the swaging held, the horizontal dies,

22- and-M being tapered to formwthe tang 89. During the swaging operation the file will, by reason of the taper faces of the dies 22 and 24, be forced back against the pressure of the springs 80 and 81, which will produce the curved shoulders 90. As fast as the taper dies reduce the stock, the "flat and vertically-o eratingdies will maintain with thethickness 05am body of t e file. Operatiom The shafts"l0, 13,'14 and 15 the tang cot-res ondingly and the worm gear 68 runcontinuously, and by reason of their central cranks also communicate a continuous reciprocatory movement to the diecarrying pitmen. The 5 crank mechanism is so adjusted. that the pitmen reciprocate in pairs. In other words, when the dies in the horizontally moving pitmen 26 and 28 are approaching each other, the dies in the vertically operating pitmen are receding, from each other, thus giving alternate blows on the four sides of a piece. \Vhile the pitmen are thus idly re- .:iprocating, their dies will be out of contact with a piece to he swaged, and during this idle reciprocation the links 42, 43, 44 and 1-5 will simply swing or turn on their pivotal supports without actuating the shafts 50, 51, as and 53. When a piece to be swaged is in position as before described, the treadle lewar 89 is actuated towithdraw the bolt 90 and permit the clutch sleeve 7 3 to be carried up into engagement with the clutch collar 7 through the influence of a spring (not shown), and thus bring the short vertical shaft 66 under the rotative influence of the worm gear 68, and, while the pitmen are reciprocating, the shaft 66 will slowly rotate and, by means of the eccentrics, gradually advance the dies toward each other as fast 39 as the iece'ofwork is reduced, and when the sha .t 66-11218 made a complete revolution, the cam projection 91 on the clutch sleeve I 73 will engage the underside of the bolt 90 and cause said sleeve to be disengaged from said clutch and thus bring shaft 66 to a state, of rest. with the pitmen and their actuating mechanism in open position with the pitmen still reciprocating, as shown at Figs. 1 audit T:Th0 straps 38, 39, s0 and 41 are adjustably secured to their respective eccentrics so that, by shifting said straps, the inward travel ofjthe pitmen may be regulated. In other words, the nearer the high point of the eccentrics approaches the center or axial 45 line of the itnicn in their rotary travel, the

,closer the ies'will come, together.

While I show'mechanism. for actuating four pitman carrying dies adapted to be brought gradually nearer each other as the swagm progresses, I hold myself at liberty to crap oy only one die carrying pitman and its operatingmechanism as shown, in which case a stationary anvil would be required. Having thus described my invention, what I claim as new and desire tosecure hy Letters Patent is 1, Aswaging machine comprising radially "reciprocating itmen carrying dies at their inner ends and their actuating mechanism, combined with mechanism for automat- Iicallyldecreasing the distance between the dies of the reciprocating pitmen during the sw'agiug operat1on,

2, LA singing machine comprising a frame,

"5' shafts iournaled therein and means torretatively connecting them together, pitmcn carryin'gdi'es at one end, mechamsm connecting the other end of the pitmen with the shafts whereby said pitme'n are rec procated, mechanism connected with the pit-man re- 7o ciprocating mechanism for automatically and gradually lessening the distance be tween. the facc'of dies during the operation of swaging, for the purpose set forth.

3. A swaging machine comprising a frame, radiallv reciprocating pitinen therein shafts journalcd in said frame and means Ior rotatively connecting them together, each shaft having a crank, an eccentric journaled on each. crank to actuate the pitm'cn, anarm 30 journaled on each eccentric, said 'itmen carrying dies at their inner ends, an means for pivotally connecting their outer ends with said arms, for the purpose set forth.

4. A swaging machine comprising a frame, 35 shafts journaled therein and means for rotatively connecting them together, each shaft having a crank, an eccentric journaled on each crank, an arm journalcd on each eccentric, pitmen carrying dies at their inner 7 ends and means for pivotally connecting their outer ends with said arms, a strap sc cured to each eccentric, secondary shafts and means for rotatively connecting them together, links connecting said straps with the secondary shafts, and means for rotating the secondary shafts while the pitmen aref reciprocating and automatically turn the eccentrics so as to 'graduall lessen the distance between the faces 0 the dies during the swaging operation, for the purpose set forth.

5.. A swaging machine comprisin a crank shaft, an eccentric -ournaled on t e crank portion of said shait, a .pitman carrying a die at its inner end, an arm pivotally connected with the opposite end, said arm journaled on the eccentric, means for rotating said shaft to reciprocate the -pitman, mech'- anism connected with the eccentric for auto- 1 matically turnin the eccentric and thus gradually advancing the pitman toward the work to be operat upon while the itman is reciprocating, for the purpose set orth.

G. in a swaging ma inne, in combination with swagiug mechanism, a movable work holding chuck, jaws therefor, tension springs for normally l ocat-in the chuck and a gage for the work, for t a purpose set forth.

i'. A swinging machine comprising a frame, shafts journaled therein and means for to tatively connecting them together, each shaft having a crank, an eccentric journaled on each crank, an arm journaled on .each eccentric, pitmcn carrying dies at their inner ends and means for pivotally connecting their outer ends with said arms, a strap adjustably connected with each eccentric, sec-.

ondary shafts and means for rotatively connecting them together, links connecting said straps with thesecondary shafts, a worm wheel, a shaft therefor on which-said Worm wheel normally runs idle,-a. worm on one of 0 the crank shafts meshing with the worm wheel, means for bringing the worm wheel shaft into rotative engagement with the worm wheel and means for connecting the worm-wheel shaft with one of the secondary 10 shafts for automatically turning the eccentries and thus gradually'advancing the reciprocating pitmen into the swaglng field,

for the urpose set forth.

Signe at Bridgeport in the county of Fairfield and State of Connecticut this 8th 15 day-of Dee. A. D'. 1908. v ANDREW BERG. -Witnesses: v

R. J. \VITTERWELL, J. Enw. BROSNAN. 

